急性冠脉综合征患者mTOR活化与调节性T细胞及细胞因子的关系

目的:检测哺乳动物雷帕霉素靶蛋白(mTOR)在急性冠脉综合征(ACS)患者外周血T细胞中的活化状态,及其与调节性T细胞(Tregs)以及细胞因子的关系。方法选取ACS患者32例(ACS组),同期因胸痛症状为主诉但心电图及冠脉造影正常,排除冠心病的胸痛综合征(CPS)患者28例为对照组;采用蛋白免疫印迹法检测2组外周血T细胞中mTOR、p70S6KT389磷酸化(p-p70S6KT389)及AKTS473磷酸化(p-AKTS473)水平;酶联免疫吸附测定法测T细胞亚群相关细胞因子干扰素-γ(IFN-γ)、白细胞介素(IL)-4、IL-17及转化生长因子-β1(TGF-β1)水平;流式细胞仪检测C...

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Published in天津医药 Vol. 43; no. 4; pp. 416 - 418
Main Author 张艳 李志樑 胡春玲
Format Journal Article
LanguageChinese
Published 南方医科大学附属珠江医院心内科,广东广州 邮编510282 2015
广东省妇幼保健院内科%南方医科大学附属珠江医院心内科,广东广州 邮编,510282%广东省妇幼保健院内科
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ISSN0253-9896
DOI10.11958/j.issn.0253-9896.2015.04.022

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Summary:目的:检测哺乳动物雷帕霉素靶蛋白(mTOR)在急性冠脉综合征(ACS)患者外周血T细胞中的活化状态,及其与调节性T细胞(Tregs)以及细胞因子的关系。方法选取ACS患者32例(ACS组),同期因胸痛症状为主诉但心电图及冠脉造影正常,排除冠心病的胸痛综合征(CPS)患者28例为对照组;采用蛋白免疫印迹法检测2组外周血T细胞中mTOR、p70S6KT389磷酸化(p-p70S6KT389)及AKTS473磷酸化(p-AKTS473)水平;酶联免疫吸附测定法测T细胞亚群相关细胞因子干扰素-γ(IFN-γ)、白细胞介素(IL)-4、IL-17及转化生长因子-β1(TGF-β1)水平;流式细胞仪检测CD4+CD25+FoxP3+Tregs占CD4+T细胞的百分比;采用Spearman相关分析各指标之间的关联性。结果 ACS组mTOR及p-p70S6KT389表达量均高于对照组(均P<0.01);与对照组比较,ACS组IFN-γ、IL-17升高,Tregs百分比及TGF-β1减少(均P<0.05),而2组p-AKTS473、IL-4比较差异无统计学意义;相关分析显示p-p70S6KT389与IFN-γ及IL-17呈显著正相关(rs分别为0.91,0.92,均P<0.01),与Tregs及TGF-β1呈显著负相关(rs分别为-0.85,-0.80,均P<0.01)。结论 ACS患者外周血T细胞中mTORC1活化与Tregs减少及细胞因子失衡有关。
Bibliography:acute coronary syndrome;tacrolimus binding proteins;T-lymphocytes,regulatory;cytokines;mTOR
ZHANG Yan, LI Zhiliang, HU Chunling 1 Department of Cardiology, Zhujiang Hospital of Southern Medical University, Guangzhou 510282, China;2 Department of Internal Medicine, Guangdong Province Maternity and Child Care Hospital
Objective To assess whether mTOR was activated in peripheral T lymphocytes of acute coronary syndrome (ACS)patients and to investigate the relationship among mTOR,regulatory T cells and cytokins. Methods Patients with acute coronary syndrome (n=32) were selected in ACS group. Meanwhile, patients who complainted of chest pain but were proven to be normal in ECG and in coronary arteriography, were excluded as ACS patients but were diagnosed as Chest Pain Syndrome (CPS) and selected in CPS group (n=28). The expression levels of mTOR, phospho-p70S6KT389 (indicative of mTORC1 activity) and phospho-AKTS473(indicative of mTORC2 activity) were investigated in T cells, which were isolated from peripheral blo
ISSN:0253-9896
DOI:10.11958/j.issn.0253-9896.2015.04.022